I cannot find proof of birthplace; 1860 Census has the whole family born in PA. Most other Census reports have Egbert's parents born in New York. I don't find a 1850 Census for the family.
Source Citation for U.S., Find A Grave Index, 1700s-Current
Name Egbert Robins Event Type Pension Event Date 1888 Event Place Wisconsin, United States Beneficiary's Name: Katie M Robins (wife, Kate Maria Robbins 'nee' Sears) Citing this Record "United States General Index to Pension Files, 1861-1934", database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QJDP-M5RG : 13 March 2018), Egbert Robins, 1888.
Name: Kate M. Sears Robbins Titles and Terms: Event Type: Death: Event Date: 1907 Event Place: Wescott, Shawano, Wisconsin Address: Residence Place: Gender: Female Age: 61 Marital Status: Race: Occupation: Birth Date: Birth Year (Estimated): 1846 Birthplace: Burial Date: Burial Place: Cemetery: Father's Name: John Sears Father's Titles and Terms: Father's Birthplace: Mother's Name: Maria Sears Mother's Titles and Terms: Mother's Birthplace: Spouse's Name: Edgbert Robbins (sp. should be Egbert Robbins) Spouse's Titles and Terms: Reference ID: Item 3 p 535 Additional Relatives: GS Film Number: 1311656 Frame Number: Digital Folder Number: 4207463 Image Number: 739 Citing this Record: "Wisconsin, Death Records, 1867-1907," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:XLFC-GMQ : 10 March 2018), Edgbert Robbins in entry for Kate M. Sears Robbins, 1907; citing Death, Wescott, Shawano, Wisconsin, Wisconsin State Historical Society, Madison; FHL microfilm 1,311,656.
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