A quasi fudai daimyo refers to some tozama daimyo (outsider to the ruler) clans, who became treated as fudai daimyo clans (relative or very close to the ruler), mainly in regards to the blood relations to the ruling family of the Edo period in Japan, mainly because of their the clans' achievement over the time.
準譜代大名（じゅんふだいだいみょう）外様大名の中で、幕閣において長年の功績のある大名を始めとして、主に血縁関係により譜代大名に準ずる家格の大名をいう。