Siegfried I, Count of Luxembourg —
Photo Credit: By Unknown - Public Domain, https://commons.wikimedia.org/w/index.php?curid=11612538

Rachel Donelson Jackson, wife of U.S. President Andrew Jackson —
Photo Credit: By Ralph Eleaser Whiteside Earl - Tennessee Portrait Project - Public Domain, https://commons.wikimedia.org/w/index.php?curid=35983121

Louisa Adams —
Photo Credit: By Charles Bird King - Public Domain, https://commons.wikimedia.org/w/index.php?curid=6371102

Martha Wayles Skelton Jefferson — A 1965 oil portrait by artist George Geygan, based on contemporary descriptions of her physical attributes and executed 183 years after her death
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=32120738

Jeffrey Wilcke —
Photo Credit:

Joseph Lubin —
Photo Credit: https://www.forbes.com/sites/laurashin/2018/02/07/joseph-lubin-ethereum-ether-consensys-crypto-cryptocurrency/?sh=2cf2c6b93575

Faculty of Letters and Arts, Lucian Blaga University —
Photo Credit: By Own work - Own work, CC BY 2.5, https://commons.wikimedia.org/w/index.php?curid=24644441

logo for Lucian Blaga University of Sibiu —
Photo Credit: By Source, Fair use, https://en.wikipedia.org/w/index.php?curid=40200061

Mihai Alisie —
Photo Credit: Decrypt

Anthony Di Iorio —
Photo Credit: https://www.coindesk.com/ethereum-co-founder-anthony-di-iorio-steps-down-as-decentral-ceo

Charles Hoskinson —
Photo Credit: By IOHK.io - https://iohk.io/en/team/charles-hoskinson, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=95591119