The song "In Conspirasy With Satan" on the first album uses the letter "s" instead of "c" in the word "conspiracy" because Quorthon used rub-on letters designing the first album. He had used all of the "c"s and therefore replaced it with an "s".
The VA "Scandinavian Metal Attack Vol. I" is the only recording featuring the first line-up of Bathory.
Even though the debut album says it was mixed at Elektra Studio on the original LP, it was never mixed at this location. Mixing was done at Heavenshore, only a master EQ was done at Elektra.
In the LP's versions of the debut album, the band forgot to put the full length of the sound effects mix into the tracklist, because they were handling all the layout-info for the printing, so the intro "Storm Of Damnation" was never listed into the LP's tracklist.

When the debut album was released in CD format in 1993, the intro "Storm Of Damnation" was finally listed in the tracklist.
On the New Renaissance version of "Under The Sign Of The Black Mark", next to the matrix number on side one, it says "!NATAS LIAH" and on side two "NEED A SWEDE".

If you read the Side one inscription in backward, you can see "HAIL SATAN!"
Quorthon intended for Nordland I and II to be the beginning of a four-album set, but he only lived long enough to finish the first two volumes.
Bathory (during proper recording for several albums) recorded among other covers Queen's "Now I'm Here" and "Ogre Battle", Motörhead's "Overkill" and Black Sabbath's "Sabbath Bloody Sabbath". None of these recordings have ever been released. The only covers recorded by Bathory to be released to date are Kiss' "Deuce" and "Black Diamond", Black Sabbath's "War Pigs" and Motörhead's "Ace Of Spades".
Thomas Forsberg is Quorthon's birth name and he later changed it to Ace Forsberg, due to his love for KISS and Ace Frehley.
While recording the self titled first album took only 56 hours, recording Destroyer of Worlds took only 112 hours. Recording the two hours and fifteen minutes worth of material for the twin head Nordland release took nearly four months in total.
When Bathory recorded the self titled debut album back in June 1984, cash flow problems prevented the band from bringing any more advanced equipment to the studio than a single tiny 20W Yamaha amp. This amp was used for both guitar and bass.
When album Hammerheart was recorded in June 1989, the band arrived to studio Heavenshore only to discover that the entire floor had been bulldozed and the gaping hole filled with gravel (to be covered in wet cement a fortnight later). The drums and amps would be placed right on top of the undulating bed of gravel. And since all electric wiring had been ripped out, bare light bulbs had to be tacked to the ceiling to provide the band with some light.
The first edition of the debut album (limited to 1,000 copies produced) was by accident printed in a neon or canary yellow dye. The golden dye requested for by the band turned out too expensive for the young group. These days, according to various sources, a mint condition "yellow goat" album cover will sell for well over $100.
Quorthon wrote Danish drummer Carsten Nielsen in the summer of 1986, asking him if he'd be interested in joining Bathory. Herr Nielsen replied that he figured his band Artillery would be ten times bigger than Bathory, and thus kindly but firmly turned the offer down.
Quorthon used the same guitar on all Bathory recordings between the "Satan My Master"/"Witchcraft" session in May 1983 and the Octagon album recorded in February 1995. The guitar was a Ibanez Destroyer I, equipped with Dimarzio's and Dean Markley strings. Since then the weapon of choice is a Gibson Flying-V with Dimarzio's and (since Dean Markley is out of business) GHS Boomers.
Renowned artist Boris Vallejo was scheduled to paint the album cover for Blood On Ice. In the end, Mr. Vallejo asked for $10.000 up front. This was money that Bathory quite simply did not have to spend on an album cover. Luckily budding Swedish master Kristian Wåhlin was more than happy to paint the exclusive art work for the complex Blood On Ice project.
The working title for the Bathory debut album was Pentagrammaton, but it was discarded when several people read it out as Pentagon. The pentagram was moved to the back of the album cover and replaced with a monster face made up from several bits cut out from various horror comics.
Elizabeth (Erzsébet) Báthory was a 17th century Hungarian noble, who enjoyed bathing in young women's blood. Estimates vary on number of girls and women she killed from 40 to 600.
The band was originally known as Nosferatu, Mephisto, Elizabeth Bathory and Countess Bathory in the beginning with Quorthon/Vans/Hanoi-lineup before settling on Bathory.
Jonas Åkerlund directed one movie, Spun (2002), as well as various video clips, for bands like Prodigy, Metallica, U2, Roxette and Madonna.
All albums had the same outro until Hammerheart, it does not have the church bells in the end.
When Quorthon formed the band in 1983, his nickname was originally Black Spade. He soon changed it to Ace Shoot, then finally to Quorthon, a name he found on a list of demons.
The owner of Black Mark Production, Börje "Boss" Forsberg, is Quorthon's father and worked alongside his son on every album recording. Their relationship to each other was only rumours up till Quorthon's death in 2004 when it was finally confirmed.
Contrary to popular belief, Bathory have never released an official demo.