The following church records have been searched without finding any STERRYS or similar:

Nil

The following church records have been searched and have located STERRYS or similar:

Littlestown (Adams County)
Saint Johns Evangelical Lutheran Church
Baptisms
The following entries are from the IGI.
1784 Mar 20 (born 14 Nov 1783) Joh. Sterri s. Joh. Sterri & Mar. Louisa (Extracted from Saint John's Evangelical Lutheran Church, Germany Township, near Littlestown, Adams County, Pennsylvania; parish registers 1763-1858. Transcription of records.)

Lower Heidelberg Township (Berkshire County)
Saint John's (Hain's) Reformed Church
Baptisms
The following entries are from the IGI
1830 May 1 (born 15 Sep 1829) Kitty Ann Sterry d. Michael Sterry & Elizabeth (Extracted from History of St. John's [Hain's] Reformed Church of Lower Heidelberg Township, Berks County, Pennsylvania)

Lowhill (Lehigh County)
Reformed Church
The following entries are from Vital Records North America (LDS)
1793 Apr 14 Elisabetha Stery d. Tobias Stery & Katharina (Typescript [50, 23 p., made in 1936] at the Evangelical and Reformed Archives, Lancaster, Pennsylvania)