1.  Marriage Record:

2.  Census Index:  Colonial America, 1607-1789 (Broderbund CD-310):  not found.

3.  1790 Census Index and Digital Images (online at Ancestry.com; Image #14 of 17; extracted by Diana Gale Matthiesen):¤•

1790

PA

Mifflin Co.

p. 126

Ln. 30

Urich Steely

1-0-1-0-0

These data indicate:

Gender and Type	Age Class	Therefore Born	Individuals Inferred
1 free white male	16 or over	in or bef. 1774	= Ulrich
1 free white female	all ages	in or bef. 1790	= Anna

Listed next to son, Jacob STEELY, who is next to son, Henry STEELY, who is four lines from son, Gabriel STEELY. 

4.  1800 Census Index and Digital Images (online at Ancestry.com; Image #17 of 27; extracted by Diana Gale Matthiesen):¤•

1800

PA

Mifflin Co.

Derry [now Decatur] Twp.

p. 496

Steely (widow)

00000-00001-00

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
1 female	45 or over	in or bef. 1755	= Anna?

If Anna died in 1793, this record should be some other STEELY widow.  Problem is, I can't figure who she might be.  List is roughly alphabetized, so no neighborhood reconstruction is possible.  Also in Derry/Decatur Township, subjects' sons:  Jacob STEELY, Gabriel STEELY, and Lazarus STEELY. 

5.  WorldConnect / Ancestry World Trees (online at RootsWeb.com/Ancestry.com).

6.  LDS.  Family Search: Internet Genealogy Service:  AF - Ancestral File (online at FamilySearch.org).

7.  Anon.  9 Sep 2007.  "The Obama Family Tree."  Chicago Sun-Times, Chicago, IL (PDF file online at suntimes.com).