Heber C. Kimball's journal records Hofheintz couple as receiving their endowment in Nauvoo.
Heber C. Kimball's Journal: November 21, 1845 to January 7, 1846 (Salt Lake City, UT: Modern Microfilm Company, n.d.), 110, December 24, 1845
At 10 minutes before 9 o'clock, [we] commenced receiving into the upper department, the persons composing company No. 4. John Pack & Mercy R. Thompson being prompters—
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Peter Hofheinz by J[ohn]. D. Lee[.]
Sarah Ann Hofheinz – by P[eter]. H[ofheinz]. & L[ucius]. N. Scovil[.]