 Assuming he was in his early to mid 20s when he was sired, Spike would be in his 140s during the series.In the comic "" #002, Spike's jar of blood has a label giving his assumed human birth date in 1853, about 27 years before he was sired.In 1880, William was a struggling poet, often mocked by his peers who called him "William the Bloody" behind his back because his poetry was so "bloody awful."