Local Geohistory Project

Event Detail

Summary

Type	Method	Description	Successful?
New County	Legislature	Allegheny County 1788 Creation	yes

Dates

Event Year(s)	Final Decree Date	Effective Date	How Effective Date Determined
1788		Sep 24, 1788	Act of Legislature - Date Approved

Map

Affected Government

From Municipality	From County	From State	To Municipality	To County	To State
Pitt, Township of (defunct) Whole	Westmoreland County Reduction	PA Part	Pitt, Township of (defunct) Whole	Allegheny County Creation	PA Part
Franklin, Township of (Westmoreland, defunct) Part	Westmoreland County Reduction	PA Part	Franklin, Township of (Westmoreland, defunct) Part	Allegheny County Creation	PA Part
Rostraver, Township of Part	Westmoreland County Reduction	PA Part	Rostraver, Township of Part	Allegheny County Creation	PA Part
Huntingdon, Township of (Westmoreland, defunct) Part	Westmoreland County Reduction	PA Part	Huntingdon, Township of (Westmoreland, defunct) Part	Allegheny County Creation	PA Part
Dickinson, Township of (Allegheny, defunct) Whole	Washington County Reduction	PA Part	Dickinson, Township of (Allegheny, defunct) Whole	Allegheny County Creation	PA Part
Cecil, Township of Part	Washington County Reduction	PA Part	Cecil, Township of Part	Allegheny County Creation	PA Part
Nottingham, Township of (Washington) Part	Washington County Reduction	PA Part	Nottingham, Township of (Washington) Part	Allegheny County Creation	PA Part
Peters, Township of (Washington) Part	Washington County Reduction	PA Part	Peters, Township of (Washington) Part	Allegheny County Creation	PA Part
Robinson, Township of (Washington) Part	Washington County Reduction	PA Part	Robinson, Township of (Washington) Part	Allegheny County Creation	PA Part
Unorganized (placeholder) Part	Northumberland County Reduction	PA Part	Unorganized (placeholder) Part	Allegheny County Creation	PA Part
Unorganized (placeholder) Part	Westmoreland County Reduction	PA Part	Unorganized (placeholder) Part	Allegheny County Creation	PA Part

Affected Government Form

Government	Government Form
Allegheny, County of	County

Metes and Bounds Description

Detail	Description	Type	Source	Acres	Beginning Point
View	Allegheny County 1788 Creation	shape	act		mouth of Flaherty's run, on the south side of the Ohio river

Law

Detail	Citation	Relationship
View	Act of September 24, 1788 (13 Pa. Stat. at Large 84, Ch. 1359), §§ 1–13	direct

Source

Detail	Source	Title	Person(s)	Vol.	Page(s)	Date 1	Date 2
View	Crumrine 1882	CECIL TOWNSHIP			698
View	Crumrine 1882	HANOVER TOWNSHIP			802
View	Crumrine 1882	ROBINSON TOWNSHIP			900
View	Negley 1876	Its Formation.
View	Newberry Comprehensive			PA		As of Feb 8, 2010	Retrieved Jan 30, 2018
View	Newberry Comprehensive			PA		As of Feb 8, 2010	Retrieved Jan 30, 2018
View	Newberry Comprehensive			PA		As of Feb 8, 2010	Retrieved Jan 30, 2018
View	Newberry Comprehensive			PA		As of Feb 8, 2010	Retrieved Jan 30, 2018
View	Newberry GIS Counties					As of Sep 30, 2011	Retrieved Jan 30, 2018
View	Newberry GIS Counties					As of Sep 30, 2011	Retrieved Jan 30, 2018
View	Newberry GIS Counties					As of Sep 30, 2011	Retrieved Jan 30, 2018
View	Newberry GIS Counties					As of Sep 30, 2011	Retrieved Jan 30, 2018