The Ukko reference article from the English Wikipedia on 24-Apr-2004
(provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Ukko

Sponsorship the way you would do it
Ukko is an ancient Finnish sky-god, from whose name is derived "ukkonen", thunder. In the Kalevala he is also called Ukko Yli-Jumala (Ukko High-god). "Ukko" in contemporary Finnish means "old man".

See also: Finnish mythology