Gotard of Służew
Gotard of Służew (Polish: Gotard ze Służewa) was a 13th-century knight and count from the Duchy of Masovia. He served under duke Konrad I of Masovia, and later duke Bolesław I of Masovia. He was also castellan of Wizna. Gotard begun the Radwan-Wierzbowa clan, related to the Radwan heraldic clan. His descendants formed noble families of Służewski, Okęcki, and Rusiecki.